Function injectReadingModeWidget

src/editor/RelationshipsDecorations.ts:674–789

* Inject relationships widget into reading mode view

(
	leaf: WorkspaceLeaf,
	plugin: TaskNotesPlugin,
	context?: ReadingModeInjectionContext
)

 * Inject relationships widget into reading mode view
 */
async function injectReadingModeWidget(
	leaf: WorkspaceLeaf,
	plugin: TaskNotesPlugin,
	context?: ReadingModeInjectionContext
): Promise<void> {
	const view = leaf.view;
	if (!(view instanceof MarkdownView) || view.getMode() !== "preview") {
		return;
	}

	if (shouldSkipMarkdownWidgetLeaf(leaf)) {
		return;
	}

	const file = view.file;
	if (!file) {
		return;
	}

	// Check if relationships widget is enabled
	if (!plugin.settings.showRelationships) {
		return;
	}

	// Show widget in task notes OR project notes.
	// Get the file's frontmatter to check if it's a task or project
	let isTaskNote = false;
	let isProjectNote = false;
	const metadata = plugin.app.metadataCache.getFileCache(file);
	if (!metadata?.frontmatter) {
		isProjectNote = isProjectNoteForRelationships(plugin, file, metadata);
	} else {
		// Check if this is a task note
		isTaskNote = plugin.cacheManager.isTaskFile(metadata.frontmatter);
		isProjectNote = isProjectNoteForRelationships(plugin, file, metadata);
	}

	if (!isTaskNote && !isProjectNote) {
		// Remove any existing widgets if conditions no longer met
		try {
			const previewView = view.previewMode;
			const containerEl = previewView.containerEl;
			containerEl.querySelectorAll(`.${CSS_RELATIONSHIPS_WIDGET}`).forEach((el) => {
				const holder = el as HTMLElementWithComponent;
				holder.component?.unload();
				el.remove();
			});
		} catch (error) {
			tasknotesLogger.debug(
				"[TaskNotes] Error cleaning up relationships widget in reading mode:",
				{
					category: "persistence",
					operation: "cleaning-up-relationships-widget-reading-mode",
					error: error,
				}
			);
		}
		return;